mwl8k: disable softirqs when accessing sta_notify_list

Use spin_[un]lock_bh in mwl8k_sta_notify().  The sta_notify handler is
required to be atomic, yet it can be called in process context, so make
sure one call won't preempt another.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 0cfdb9d..6497c84 100644 (file)
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -3784,9 +3784,9 @@ mwl8k_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                s->cmd = cmd;
                s->sta = *sta;
 
-               spin_lock(&priv->sta_notify_list_lock);
+               spin_lock_bh(&priv->sta_notify_list_lock);
                list_add_tail(&s->list, &priv->sta_notify_list);
-               spin_unlock(&priv->sta_notify_list_lock);
+               spin_unlock_bh(&priv->sta_notify_list_lock);
 
                ieee80211_queue_work(hw, &priv->sta_notify_worker);
        }